Impex Marcy PM-3800 Owner's Manual page 7

STEP 1 (See Diagram 1)
A.) Attach the Bench Rear Stabilizer (#2) to the Bench Base Frame (#3).
B.) Secure them together with two M12 x 3 ¾" Hex Bolts (#49), one 2" x 5 ½" Bracket
(#15), four Ø 1" Washers (#54), and two M12 Aircraft Nuts (#52).
DIAGRAM 1
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STEP 2 (See Diagram 2)
A.) Do not tighten all Nuts and Bolts starting from this procedure until instructed
to do so.